Hope I'm not too late on this, but I searched around quite a bit when I got my artograph, and here's what I ended up getting:
Artograph 1520 - purchased from BearAir - $200 +15 shipping (price now $220)
Metal hood - purchased from Madison Art Shop - current list $80 (+15 shipping?)
At the time, this was the cheapest I was able to find after a couple months of searching, though the prices have since gone up.
Note that the in the low $200 range, the 1520 will probably only have a cardboard hood. Some of the places that cost more also throw in the metal hood, which naturally raises the price, though I found it was cheaper to purchase them separately. For example, Testor's lists the 1520+ metal hood for $500. Micromark lists the combo for $300 before shipping. (http://www.ares-server.com/Ares/Ares.asp?MerchantID=RET01229&Action=Catalog&Type=Product&ID=82427)
If I remember right, I paid a little under $300 after shipping purchasing them separately (but like I said, the prices have since gone up)
Hope you're happy with whatever you end up with.